534
0
19
874
1
19
647
0
19
603
4
19
826
0
19
1061
0
19
842
1
19
741
0
19
559
0
19
327
0
19
1693
0
18
398
0
18
594
0
18
461
0
18
780
0
18
17806
0
18
804
0
18
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Keyword(s): 中3数学